Typewriting- machine



Mar. 27, 1923- C. B. CORCORA N TYPEWRI'IING MACHINE Filed July 26, 1922 Mrmfor: W fi/mmam Patented Mar. 27, 1923 UNITED STATES PATENT OFFICE.

CORNELIUS B. COR-OCEAN, OF NEW YORK, N. Y., ASSIGNOR TO UNDER'WOOD TYPE- WRITER COMPANY, OF NEW YORK, N. 1., A CORPORATION OF DELAWARE.

TYPEWRITING MACHINE.

Application filed July 26, 1922.

To all whom it may concern:

Be it known that I, CORNELIUS B. Conco- RAN, a citizen of the United States, residing in borough of the Bronx, in the county of the Bronx, city and State of New York, have invented certain new and useful Improve ments in Typewriting Machines, of which the following is a specification.

This invention relates, primarily, to typewriting machines in which radially-disposed type-bars are arranged about a common printing point and move one at a time to the printing position.

These type-bars, especially in frontstrike machines, are often closely arranged, so, that, in rapid operation, there is liability of clashing, due largely to'the fact that the type-bars may rebound from the basket or type-rest, upon returning to normal position, thus getting into the path of a subse quently operated type-bar. Cushions have been provided at the type-rest to prevent such rebound.

An object of the invention is a cushion, for the purpose mentioned, which shall function more effectively, be of cheaper and more durable construction, and be less subject to deterioration by wear, and to indentation and disfigurement by the type-bars, than cushions heretofore employed.

Another object of the invention is an improved cushion comprising strands of wire of such inelastic nature, and so set or laid one upon the other, as to absorb the force of the return-strokes of the type-bars, and thereby to eliminate rebound of the latter.

Other features and advantages will hereinafter appear.

In the accompanying drawings.

Figure 1 is a view, in cross-sectional side elevation, through the platen, type-rest or basket, and type-segment of a front-strike typewriting machine, the type-bar, pivoted to the type-segment, being shown in normal position upon the type-rest.

Figure 2 is a front view of the type-rest 0r basket, hung from the top plate of the machine.

Figure 3 is a top plan view of the typebar-rest or basket.

Figure 4 illustrates the character of wire of which the rest is preferably made.

Figure 5 is a view showing one end of the bundle of wires tied together.

Serial No. 577,537.

Figure 6 is a view, in cross-section, through the bundle of wires.

Figure 7 is a view similar to Figure 5, with a temporary cap on the end of the bundle to facilitate insertion of the same into an envelope.

The machine illustrated is of the frontstrike variety. Type-bars 10, carrying types 11, lie horizontally in front of and below a platen 12, and are pivotally supported at their rear ends upon a curved fulcrum-rod 18, mounted in a slotted segment 14:; the type-bars being operated by horizontal pullrods 14, and provided with the usual returning springs (not shown). At their forward ends, the type-bars rest in a basket. The base of this basket is a segmental bar 15, having cars 16, whereby the segmental bar may be hung by screws 17 from the top plate 18 of the machine-frame, at the front of the latter. Set within the concavity of the segmental bar 15 is a cushion 19, against which the ends of the type-bars strike on return from the platen, and on which the typebars rest except when operated.

The cushion is formed as follows: A number of lengths 20 of wire, preferably ordinary twisted picture-wire. such as shown in Figure 4:, are laid longside each other to form the bundle of Figures 5 and 6. This bundle is shown as of cylindrical cross-section, but it may be of flattened or elliptical crosssection. The strands, forming the bundle, are tied together, at 21, at the ends thereof. The bundle is then inserted in an envelope or sleeve 22 of soft, flexible material, such, for instance, as canvas. For easier insertion of the bundle into the envelope, a cap 23, covering the ends of the strands, is slipped onto one end of the bundle. After the bundle is in the envelope. the cap 23 may be removed. The ends of the envelope are then closed by the usual flat, metal, folded clips or beads 24. The long edges of the envelope are brought to gether to form a lip or flange 25, to receive screws 26, for holding the envelope in the concavity of the segmental bar 15.

The fibers of the wirestrand 20 are soft and fine, so that when twisted or woven together, the strand itself is soft, yieldable and flexible, and practically inelastic. Furthermore, when the strands are laid together in a bundle, as shown in Figures 5 and 6, the friction of one strand on the other, upon movement of the strands under the force of the type-bar-impact, absorbs the force of the impact and prevents quick recovery of the strands to original position,

so that'there can be practically no rebound of the type-bars.

At the same time, there can be no crowding of the cushion-material, laterally of the type-bar, to form indentations in the cushion as where shot or other granular material forms the cushion.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim: 1 p

1. A type-rest comprising strands of soft, inelastic wire, laid one on the other.

2. ik l' ype-rest comprising strands of p1cture-wire, laid one on the other.

3. A type-rest comprising strands of soft, inelastic wire, laid one on the other, and tied together at their ends.

4. A type-rest comprising strands of soft. inelastic wire, laid one on the other, and an envelope of soft, flexible material, such, for instance, as canvas, in which the strands are bound.

A type-rest comprising strands of soft,

inelastic wire, laid one on the other, and parallel to one another.

' 6. A type-rest comprising a rigid bar, and strands of soft, inelastic wire, laid one on another on the bar, lengthwise of the latter. i

7 A type-rest comprising strands of soft, inelastic wire, laid one on the other, an envelope of soft. flexible material, in which the strands are bound, and a rigid bar on which the envelope of strands is laid length wise.

S. The method of making a type-rest'consisting in laying strands of. soft, inelastic wire one upon another, and lengthwise of each other, tying the ends of the strands together, temporarily capping," one end of the bundle of strands, inserting the bundle, capped end. first, in a sleeve of soft, flexible material, such, for instance, as canvas, removing the cap, and closing the end of the sleeve.

9. In a front-strike typewriting machine, a rigid segmental bar hung fromthe frame at the front thereof, and a cushion comprising strands of soft, inelastic wire, laid one upon, the other, lengthwise of the bar, inthe concavity thereof.

ll). In a front-strike typewriting machine, a platen, a rigid segmental bar. hung from the frame forward of the platen, a cushion comprising strands of soft, inelastic wire, laid one upon the other, lengthwise of the bar, in the concavity thereof, and type-bars adapted to swing from the platen to a normal position in which the backs thereof rest upon the cushion.

11. Ina front-strike typewriting machine, a platen, a rig-id segmental bar hung from the frame forward of the platen,

a cushion comprising strands of soft, inelastic wire, laid one upon the other, lengthwise of the bar, in the concavity thereof,

type-bars adapted to swing from the platen to a normal. position in which the backs thereof rest upon the cushion, and an envelope of soft, flexible material. such, for instance, as canvas, embracing the strands and fastened to the segmental bar.

CORNELIUS B. CORCORAN. Witnesses JnNNm P. THORNE, EDITH B. LIBBEY. 

